CN210340761U

CN210340761U - Coke oven drying structure

Info

Publication number: CN210340761U
Application number: CN201920904243.6U
Authority: CN
Inventors: 耿宁; 杨俊峰; 严国华; 韩龙
Original assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Current assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-04-17
Anticipated expiration: 2029-06-17

Abstract

The utility model relates to a coke oven baking structure, which comprises a baking oven channel and baking oven holes, wherein the oven channel is arranged in the oven top area of a coke oven and is a channel which is formed by building blocks in the oven top area and is arranged from the side to the coke side along the longitudinal direction of the coke oven, and a plurality of baking oven holes are arranged in the baking oven channel at intervals along the longitudinal direction; the oven also comprises a plurality of adjusting bricks, and the plurality of adjusting bricks are movably arranged in the oven channel. The coke oven baking structure has simple structure, can conveniently and quickly adjust the direction and the area of gas flow in the baking process, thereby achieving the purposes of high-efficiency baking and improving the uniformity of the baking.

Description

Coke oven drying structure

Technical Field

The utility model relates to a coke oven baker technical field especially relates to a coke oven baker structure.

Background

The oven drying of the coke oven is an important work before the coke oven is started to work, and the quality of the oven drying directly influences the service life of the coke oven masonry. The coke oven is mainly built by silica bricks, clay bricks, refractory clay and the like, and the oven is a cold coke oven built and provided with oven protection equipment, which is gradually heated from normal temperature to the temperature capable of charging coal. When the coke oven is baked, the coke oven masonry is dried, dehydrated and heated, and a large amount of water is removed. In the process of baking, due to the rise of temperature, refractory materials such as silica bricks and the like can expand in different temperature zones, in order to prevent cracks of the brickwork caused by uneven expansion, a temperature management system is formulated by the baking, the temperature of each part of the coke oven brickwork is gradually increased according to the thermal expansion property of the refractory materials, the uniform rise of the temperature in the same area is ensured as much as possible, the temperature difference among different areas is as small as possible, the over-fast temperature rise of the local area is avoided, and the baking quality and the efficiency are improved.

The coke oven controls the temperature rise of the oven body and the expansion of the oven body to follow certain specifications in the oven drying process so as to avoid the damage of the oven body and ensure the quality of the oven supply. The gas flowing way during the furnace baking is as follows: hot waste gas of a small oven → a carbonization chamber → an oven hole → a vertical flue → a chute → a regenerative chamber → a small flue → a waste gas tray → a flue → a chimney. The coke oven body is provided with an oven hole, namely a passage of the carbonization chamber communicated with the combustion chamber, and is sealed by a special plug brick after the oven is finished (before production). According to different furnace body structures, the number of the oven holes is different, generally 3 oven holes are arranged near each coal charging hole, 2 oven holes are respectively arranged at the furnace ends at the machine side and the coke side, and the diameter of the oven hole at the furnace end is larger than that of the oven hole in the middle; in addition, a horizontal channel of the oven is also arranged to connect a plurality of vertical fire channels with the same oven hole.

In the process of baking, the coke oven masonry is expanded in the transverse direction, the longitudinal direction and the height direction. The expansion of the coke oven masonry has irreversibility, and generally, after the masonry is cracked due to the relaxation of protective pressure, the masonry is difficult to recover. Therefore, when the furnace is dried, the expansion of the furnace body needs to be controlled by controlling the temperature rise speed and adjusting the temperature distribution of the upper part and the lower part of the masonry. And controlling reasonable heating speed according to the change of the transverse expansion difference of each temperature section, and judging the reasonability of the upper and lower temperature distribution of each temperature section according to the distribution of the transverse expansion values of each section.

A plurality of fire paths are arranged along the transverse direction of the coke oven body and are blind fire paths, namely, no oven drying holes are connected with the vertical fire paths at the initial temperature rise stage, the heat transfer mode is only radiation and conduction, and the convection action of hot air flow is avoided. The existing large coke oven has more than 30 vertical flues from the machine side to the coke side, about half of the vertical flues do not have hot waste gas flowing, part of partition walls of the vertical flues are not contacted with the hot waste gas, and the integral transverse temperature rise uniformity of refractory materials at the combustion chamber is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a coke oven baking oven structure, its simple structure can make things convenient for quick regulation baking oven in-process gas flow's direction and region to reach high-efficient baking oven, improve the purpose of baking oven homogeneity.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a coke oven baking structure comprises a baking channel and baking holes, wherein the baking channel is arranged in a top area of a coke oven and is a channel formed by bricks in the top area and longitudinally arranged along the coke oven from the side to the side of the coke, and a plurality of baking holes are longitudinally arranged in the baking channel at intervals; the oven also comprises a plurality of adjusting bricks, and the plurality of adjusting bricks are movably arranged in the oven channel.

The shape and the size of the adjusting brick are matched with the shape and the size of the cross section of the baking furnace channel at the corresponding placement position.

The oven channel is of an equal cross-section structure or a variable cross-section structure along the longitudinal direction.

The baking furnace channel is longitudinally arranged in the same brick layer or different brick layers.

The adjusting brick is provided with a hook hole for matching with a hook tool extending into the adjusting brick through the observation hole.

The oven holes are arranged at 3 positions corresponding to all the coal charging holes, and the oven holes are arranged at 2 positions of the oven head at the machine side and the oven head at the coke side respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the structure is simple, and the flowing direction and area of the oven gas can be conveniently and rapidly changed by changing the state of the adjusting brick;

2) compared with the prior art, the utility model discloses can make the whole horizontal temperature difference of combustion chamber as little as possible, avoid local area's the too fast intensification, can improve baker quality and efficiency.

Drawings

FIG. 1 is a schematic view of a structure of a coke oven according to the present invention.

Fig. 2 is a view a-a in fig. 1.

In the figure: 1. adjusting brick 2, furnace top zone 3, fire observation hole 4, oven channel 5, vertical fire channel partition wall 6, oven hole

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in fig. 1 and 2, the coke oven structure of the present invention comprises an oven channel 4 and oven holes 6, wherein the oven channel 4 is arranged in the oven top area 2 of the coke oven and is a channel formed by building blocks in the oven top area and longitudinally arranged along the coke oven from the side of the oven to the side of the coke oven, and a plurality of oven holes 6 are longitudinally arranged in the oven channel 4 at intervals; also comprises a plurality of adjusting bricks 1, and a plurality of adjusting bricks 1 are movably arranged in the oven channel 4.

The shape and the size of the adjusting brick 1 are matched with the shape and the size of the cross section of the baking furnace channel 4 at the corresponding placement position.

The oven channel 4 is of a uniform cross-section structure or a variable cross-section structure along the longitudinal direction.

The baking furnace channel 4 is longitudinally arranged in the same brick layer or different brick layers.

The adjusting brick 1 is provided with a hook hole for matching with a hook tool extending into the fire observation hole 3.

The number of the oven holes 6 is 3 corresponding to each coal charging hole, and the number of the oven holes is 2 at the machine side furnace head position and the coke side furnace head position respectively.

The utility model relates to an adjusting method of a coke oven drying structure, which comprises the following steps: the baking furnace gas is introduced from the carbonization chamber and enters a baking furnace channel 4 through each baking furnace hole 6, the baking furnace channel 4 is divided into a plurality of sections by the adjusting bricks 1, and the baking furnace gas in each section respectively enters the corresponding combustion chamber to transfer heat to the vertical fire path partition wall 5; according to a temperature management system, the hook tool is inserted from the observation hole 3, the number and the placement position of the adjusting bricks 1 in the oven drying channel 4 are adjusted at any time, the flowing direction and the area of oven drying gas are changed, and the uniform temperature rise of the oven body of the coke oven is realized during the oven drying period.

As shown in fig. 1, which is a specific structure of the oven structure of the coke oven of the present invention, the oven channel 4 adopts a linear structure (located in the same brick layer) longitudinally opened from the side of the oven to the side of the coke, and has the same shape and size of the cross section along the longitudinal direction (equal cross-section structure). The baking furnace channel 4 can also adopt a segmented structure along the longitudinal direction, and each segment is respectively positioned in different brick layers, namely a zigzag structure.

As shown in fig. 2, the shape of the adjusting brick 1 is the same as the cross-sectional shape of the baking oven channel 4, but the size is slightly smaller than the cross-sectional size of the baking oven channel 4, so as to ensure that the adjusting brick 1 can be smoothly placed and moved in the baking oven channel 4, and simultaneously, the adjusting brick can play a role in preventing air flow from passing through. When the oven channel 4 adopts a variable cross section (the shape or the size is variable, or both the shape and the size are variable) along the longitudinal direction, the adjusting bricks 1 of various models are adopted, and the adjusting bricks 1 are matched with the shape and the size of the oven channel 4 at the corresponding placement position.

As shown in fig. 1, 3 (1 set) oven holes 6 are provided corresponding to each coal charging hole, 2 (1 set) oven holes are provided at the machine side oven head position and the coke side oven head position, and the adjusting brick 1 can be placed between 2 sets of oven holes 6 as required, or between the same set of oven holes 6.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A coke oven baking structure comprises a baking channel and baking holes, wherein the baking channel is arranged in a top area of a coke oven and is a channel formed by bricks in the top area and longitudinally arranged along the coke oven from the side to the side of the coke, and a plurality of baking holes are longitudinally arranged in the baking channel at intervals; the drying furnace is characterized by further comprising adjusting bricks, and the adjusting bricks are movably arranged in the drying furnace channel.

2. The coke oven structure of claim 1, wherein the shape and size of the adjustment brick is matched to the cross-sectional shape and size of the oven tunnel where it is correspondingly placed.

3. The coke oven structure of claim 1, wherein the oven tunnel is of a constant cross-section or variable cross-section in the longitudinal direction.

4. The coke oven structure of claim 1, wherein the oven channels are longitudinally disposed in the same brick course or in different brick courses.

5. The coke oven structure of claim 1, wherein the adjustment brick is provided with a hook hole for cooperating with a hook tool extending through the viewing hole.

6. The coke oven drying structure of claim 1, wherein 3 drying holes are provided corresponding to each coal charging hole, and 2 drying holes are provided at each of the machine side head portion and the coke side head portion.